Ha! Got you An extract (page 61) from "The Battle: a tank officer remembers" by Capt. Geoffrey Bishop MC, C Sqr, 23rd Hussars, describing events during Op BLUECOAT on 31st July 1944: A still from IWM film no. A70 113-12: The film description reads "On the 31st July 1944, an M10 self-propelled gun rumbles through the cross-roads village of St Martin des Besaces past a derelict boutique whose balcony sports the naked top halfs of two female dummies." Nice to get visual confirmation.
More here. THE GERMAN INVASION OF THE SOVIET UNION 1941 | Imperial War Museums Tailors' dummies outside wrecked shop in Ukraine